Technical white paper
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Compatibility
HPE PDUs are guaranteed to fit with HPE Racks (See Figure 5). Developed and tested for use in HPE racks, these HPE PDUs eliminate typical
installation issues found with third-party PDUs. HPE PDU compatibility speeds-up deployment with tool-less mounting system supported by
PDU trays in the rear of HPE G2 racks. Support for mounting between the Radio Electronics Television Manufacturers Association (RETMA) rails
reduces space requirements (only supported in HPE racks).
Figure 5.
HPE PDU compatibility
Grounding and earth leakage current
For proper operation and safety, rack components must be properly grounded in accordance with any local and regional building codes.
Furthermore, make sure that all power distribution devices used in the installation, such as branch wiring and receptacles, are listed or certified
grounding-type devices.
Because of the high ground-leakage currents associated with multiple servers connected to the same power source, a reliable grounded
(earthed) connection is essential. HPE recommends the use of a PDU that is either permanently wired to the building’s branch circuit or is
provided with a non-detachable cord that is wired to an industrial style plug. National Electrical Manufacturers Association (NEMA) locking-style
plugs or those complying with International Electrotechnical Commission (IEC) 60309 are considered suitable for this purpose. HPE does not
recommend using common power outlet strips for this equipment.
Observe the following limits when connecting the product to AC power distribution devices:
•
For UPS products and PDUs that have permanently attached AC power cords or are directly wired to the building power, the total combined
leakage current should not exceed 5 percent of the total input current required for the connected products.
•
For UPS products and PDUs that have detachable AC power cords, the total combined leakage current should not exceed 3.5 mA per PDU or
UPS.
HPE created the Power Advisor Tool to provide meaningful estimates of the power needs for HPE ProLiant, HyperScale, Synergy and Integrity
servers. The tool is used for estimating power use of the major components within a rack to determine power distribution, power redundancy,
and battery backup requirements for computer facilities. You can use the Power Advisor to:
•
Accurately estimate power consumption of your HPE server and storage products
•
Select the appropriate power supplies and other system components
•
Configure and plan power usage at a system, rack, and multi-rack level
The HPE Power Advisor is available at: hpe.com/info/rackandpower.
